基于土体固结流变的桩基长期沉降数值模拟

周红波; 卢剑华; 蔡来炳

doi:10.13204/j.gyjz200611019

基于土体固结流变的桩基长期沉降数值模拟

doi: 10.13204/j.gyjz200611019

1.
1 上海建科建设监理咨询有限公司上海200032;br
2.
2 上海瑞明置业有限公司上海200120;
3.
3 同济大学上海200092

详细信息

作者简介:
周红波男 1972年10月出生博士高级工程师 E-mail:zhouhongbo@online.sh.cn

中图分类号: TU473.1
计量
- 文章访问数: 107
- HTML全文浏览量: 7
- PDF下载量: 46
- 被引次数: 0
出版历程
- 收稿日期: 2006-04-13
- 刊出日期: 2006-11-20

NUMERICAL SIMULATION OF LONG-TERM SETTLEMENT OF PILE FOUNDATION CONSIDERING CONSOLIDATION AND RHEOLOGICAL PROPERTIES OF SOILS

Zhou Hongbo¹,

1.
1 Shanghai Jianke Project Management Co.,Ltd.Shanghai 200032;
2.
2 Shanghai Ruiming Real Estate Co.,Ltd.Shanghai 200120;
3.
3 Tongji University Shanghai 200092

摘要

摘要: 通过考虑上海饱和土体的固结流变特性以及桩端压缩层为砂土的三层土层剖面,运用有限元分析程序ABAQUS,对钻孔桩基和打入桩基的沉降特性进行了模拟分析,并对浅层砂土的存在对两种桩基的影响进行分析。通过引入小孔扩张理论模拟打桩引起的超静孔隙水压力,模拟验证施工效应对桩基沉降的影响,并基于打桩施工对浅层砂层的挤土效应,模拟分析了浅层砂土对减少打入桩基沉降的作用。
- 土体黏弹性 /
- 打入桩 /
- 钻孔桩 /
- 长期沉降 /
- 数值模拟 /
- 砂土层 /
- 打桩效应
Abstract: By considering consolidation and rheological characteristics of Shanghai saturated soils and three soil layers calculated model in which the compressible strata of pile toe is sand,the numerical simulation of settlement characteristics of bored pile and driven pile foundation is carried out by FEM software package(ABAQUS) and the effects of sand layer surrounding the pile in shallow depth on both kinds of pile foundations are analyzed.The effects of piling effect on pile foundation settlement are effectively verified in accordance with the usage of cylinder expansion theory to simulate the excess pore water pressure induced by pile driving.Finally,based on the displaced soil effect in shallow sand layer surrounding the pile induced by pile driving,numerical simulation of positive action of shallow sand strata surrounding the pile to reduce the driven pile foundation settlement is also presented.
- viscoelasticity of soil /
- driven pile /
- bored pile /
- long-term settlement /
- numerical simulation /
- sand layer /
- piling effect

HTML全文

参考文献(9)

张定,陈竹昌,姚笑青.桩的施工方法对桩基沉降的影响.同济大学学报,1999,27(6):723-727

[2] 周红波.桩的类型和施工技术与工艺对桩基性状影响研究:[博士学位论文].上海:同济大学,2004

[3] 大谷顺.杭基础设计におけゐ施工过程の影响.土と基础,2002,50(8):13-14

[4] 陈锦剑.考虑固结和流变的上部结构与地基基础共同作用研究:[硕士学位论文].上海:上海交通大学,2002

[5] Heydinger A G,O' Neill M W.Analysis of Axial Pile-Soil Interaction in Clay.International Journal for Numerical and Analytical Methods in Geomechanics,1986(10):367-381

[6] 大谷顺,菊池喜昭.杭基础の施工に伴ぅ杭体ぉょび周边地盘の应力变化.上と基础,2000,48(6):41-46

[7] 董炳炎,李云翼,陈国栋,等.桩入上前后软上地基ps值的对比试验研究.水文地质工程地质,2003(1):39-44

[8] 付国顺.打桩对砂砾层地基影响的探讨.福建建筑,2000(4):22-23

[9] Koji Suzuki,Takeo Asanuma,Hirofumi Taguchi.Change in Mechanical Property of Sandy Deposit Investigated by Cone Penetration Test Conducted Before and After Pile Driving// Honjo,Kusakase,Matusi,Kouda Pokharel,eds.Foundation Design Codes and Soil Investigation in View of International Harmonization and Performanee.Lisse:Swets Zeitlinger,2002:245-250

施引文献

资源附件(0)

访问统计